This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of terminal blocks for mine flameproof low-voltage electrical appliances. This standard applies to the design, manufacturing and inspection of terminal blocks. The terminal block penetrates the housing cavity and the wiring cavity and is used for connecting wires and cables between power sources or loads.
JB/T 4262-1992 history
1992JB/T 4262-1992 Plastic-sheathed Cable entry device for explosion proof electric apparatus